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🔧 Lock it down cleanly, cure it quickly, fix it like a pro!
Loctite 37643 Blue Medium Strength Threadlocker Stick is a 9g wax-like adhesive stick designed for medium-strength thread locking on metals including aluminum and stainless steel. It offers a mess-free, drip-proof application ideal for overhead and hard-to-reach repairs. The formula cures fast—handling strength in 10 minutes and full cure in 24 hours—while tolerating minor oil contamination. Compatible with bolts and nuts from 6mm to 19mm, it provides reliable, removable locking for automotive and maintenance tasks.




| ASIN | B0053ZNMDE |
| Best Sellers Rank | #2,022 in Automotive ( See Top 100 in Automotive ) #9 in Thread Lock Sealers |
| Brand | Loctite |
| Brand Name | Loctite |
| Color | Blue |
| Compatible Material | Aluminum, Metal, Stainless Steel |
| Container Type | Stick |
| Customer Reviews | 4.8 out of 5 stars 3,628 Reviews |
| Full Cure Time | 24 hours |
| Global Trade Identification Number | 00079340376434 |
| Included Components | (1) LOCTITE 248 Blue Threadlocker Glue Stick | Blue, 9 Gram Wax Stick |
| Item Form | Stick |
| Item Package Quantity | 1 |
| Item Type Name | automotive-thread-lock-sealers |
| Item Weight | 0.27 g |
| Manufacturer | Loctite |
| Material | Aluminum , Stainless Steel |
| Material Type | Aluminum,Stainless Steel |
| Model | 37643 |
| Number of Pieces | 1 |
| Other Special Features of the Product | Strong |
| Part Number | 506166 |
| Special Feature | Strong |
| Specific Uses For Product | Repair |
| UPC | 079340376434 |
| Unit Count | 1 Count |
| Viscosity Level | Medium |
| Volume | 9 cubic centimeters |
| Water Resistance Level | Not Water Resistant |
M**A
Convenient Loctite Threadlocker Stick for Easy Application
This Loctite Threadlocker Stick is a game-changer when it comes to securing bolts and screws in place. It's so easy to use - just twist it up like a glue stick and apply directly to the threads. No more messy liquid dripping everywhere! The medium strength formula holds everything tight without making it impossible to remove later if needed. One thing to note is that the stick format can make it a bit tricky to reach tight spaces or apply evenly on smaller screws. However, the convenience and mess-free application definitely outweigh this minor inconvenience. Overall, if you're tired of dealing with runny liquids and want a cleaner threadlocking experience, this stick is worth a try!
P**.
The Perfect Solution for Easy and Mess-Free Application
I absolutely love my Loctite lipstick! It's like gold for mechanics, offering a convenient way to get the job done without the hassle of shaking old bottles. With this product, there's no mess or worries about it tipping over. It lasts just as long, if not longer, than the small bottles, making it perfect for those awkward jobs. Highly recommend it for anyone looking for a reliable and efficient solution.
L**S
Incredible Threadlocker Stick for Easy Application
This threadlocker stick is a game-changer! I love how convenient it is to use with its twist-up design, making application a breeze. The medium strength formula is perfect for securing screws and bolts without any worries about them coming loose. I've used it on various projects around the house, and it has never failed me. The 9g size is just right for keeping in my toolbox or pocket for quick fixes on the go. I highly recommend this Loctite 37643 Blue Medium Strength Threadlocker Stick to anyone who wants a reliable solution for preventing loosening and leakage. It's like having a magic wand for all my DIY needs! 🔧🧰💙
D**N
Useful
Much better than the liquid. Very useful when building rifles. Less mess and no waiting for it to dry vs the liquid.
C**K
Just does the job
Just grabbed this for my home studio because I was tired of small bottles slipping and leaking on my drafting table. This one stays put, no wobble, no random spills while I’m sketching logos or mocking up layouts. I used it during a late-night packaging project and forgot about it for a while, came back and it was still going strong, same as a couple of those tiny bottles. I like that I don’t have to keep stopping mid-idea to deal with refills. For awkward angles under my monitor riser or behind equipment, it fits and works well. Glad I switched to this size.
R**E
Solid Stick
I just recently found out by watching a Spyderco Knife video that there was a solid "Chap Stick " like Blue thread locker. This stuff is so much easier to work with for tiny screws without leaving a mess! Now hopefully it will lock threads as good!
A**R
Very easy and clean to apply
Excellent product
L**R
Name Brand and Recommended.
This product quietly and invisibly serves. It can be very important. I recommend using the name brand stuff. (I have no connection to the product, just experience using it.) Buy with confidence.
C**N
Muy bueno y muy práctico 👍
Excelente producto. Muy buena calidad y muy práctico para sellos especiales
L**F
Bâton rétractable très pratique
Bon produit facile à appliquer et fonction très bien
M**T
Works great
First time I ever buy that kind of Loctite and I love it. It’s not running like the other and half of it is on your hands. It’s nice and waxing and definitely not as messy and works just as good
R**R
Easy to use in this format
Handy to have around, easy to use in this format.
D**.
Works good, keeps screws on knives tight
I like it, way better than liquid loctite.
Trustpilot
2 months ago
3 weeks ago